diff --git a/dist/app.js b/dist/app.js index fa5b1c1..07936a7 100644 --- a/dist/app.js +++ b/dist/app.js @@ -1,31 +1,16 @@ "use strict"; -var Department = /** @class */ (function () { - // readonly는 프로퍼티를 초기화한 후 수정할 수 없다. 즉, 한번 할당 되면 변경되면 안되는 고유 번호들을 설정할 때 readonly를 사용한다. - function Department(id, name) { - this.id = id; - this.name = name; - // private id: string; - // private name: string; - this.employees = []; - // this.id = id; - // this.name = n +// function merge(objA: T, objB: U): T & U { +// return Object.assign({}, objA, objB); +// } +function countAndDescribe(element) { + let descriptionText = "Got no Value"; + if (element.length === 1) { + descriptionText = "Got 1 element"; } - Department.prototype.describe = function () { - console.log("Department (".concat(this.id, "): ").concat(this.name)); - }; - Department.prototype.addEmployee = function (employee) { - // this.id = '2'; // readonly이기 때문에 error가 발생한다. - this.employees.push(employee); - }; - Department.prototype.printEmployeeInformation = function () { - console.log(this.employees.length); - console.log(this.employees); - }; - return Department; -}()); -var accounting = new Department('1', 'Accounting'); -accounting.addEmployee('Max'); -accounting.addEmployee('Manu'); -// accounting.employees[2] = 'Anna'; -accounting.describe(); -accounting.printEmployeeInformation(); + else if (element.length > 1) { + descriptionText = 'Got ' + element.length + ' elements.'; + } + return [element, descriptionText]; + // return ['Max', 'Tom']; //error 발생 : 타입을 명시했기 때문에 그렇다. +} +console.log(countAndDescribe('Hi, there!')); diff --git a/index.html b/index.html new file mode 100644 index 0000000..e2da7ca --- /dev/null +++ b/index.html @@ -0,0 +1,14 @@ + + + + + + + Document + + + + + + + \ No newline at end of file diff --git a/src/app.ts b/src/app.ts index d8a50ee..0e21656 100644 --- a/src/app.ts +++ b/src/app.ts @@ -1,83 +1,27 @@ -class Department { - // private id: string; - // private name: string; - private employees: string[] = []; - // readonly는 프로퍼티를 초기화한 후 수정할 수 없다. 즉, 한번 할당 되면 변경되면 안되는 고유 번호들을 설정할 때 readonly를 사용한다. - constructor(private readonly id: string, public name: string) { - // this.id = id; - // this.name = n - } - describe(this: Department) { - console.log(`Department (${this.id}): ${this.name}`); - } +// function merge(objA: T, objB: U): T & U { +// return Object.assign({}, objA, objB); +// } - addEmployee(employee: string) { - // this.id = '2'; // readonly이기 때문에 error가 발생한다. - this.employees.push(employee); - } +// const mergeObj = merge({ name: 'Max', hobbies: ['Sports'] }, { age: 30 }); - printEmployeeInformation() { - console.log(this.employees.length); - console.log(this.employees); - } -} +// const mergeObj2 = merge({ name: 'Max' }, { age: 30 }); -class ITDepartment extends Department { - admins: string[]; - constructor(id: string, admins: string[]) { - super(id, 'IT'); - this.admins = admins; - } -} - -class AccountingDepartment extends Department { - private lastReport: string; +// console.log(mergeObj.name); - get mostRecentReport() { - if (this.lastReport) { - return this.lastReport; - } - throw new Error('No report found.'); - } - - set setMostRecentReport(value: string) { - if (!value) { - throw new Error('Please pass in a valid value!') - } - this.addReport(value); - this.lastReport = value; // 여기서 lastReport를 업데이트 그래야 lastReport가 비어있지 않기 때문에 정상적으로 동작을 한다. - } - - constructor(id: string, private reports: string[]) { - super(id, 'Account'); - //strictPropertyInitialization 활성화로 초기화 해줘야 함. - this.lastReport = reports[0] || ""; // 초기값을 할당 (reports가 비어있으면 빈 문자열) - } - - addReport(text: string) { - this.reports.push(text); - } +//interface와 Generics의 조합 +interface Length { + length: number; +} - printReports() { - console.log(this.reports); +function countAndDescribe(element: T): [T, string] { //반환값은 Generics를 사용했기에 타입추론이되지만 명확하게 명시를 해줘야한다면 현재와같이 작성하면 된다. + let descriptionText = "Got no Value"; + if (element.length === 1) { + descriptionText = "Got 1 element"; + } else if (element.length > 1) { + descriptionText = 'Got ' + element.length + ' elements.'; } + return [element, descriptionText]; + // return ['Max', 'Tom']; //error 발생 : 타입을 명시했기 때문에 그렇다. } -const accounting = new Department('1', 'Accounting'); -const ITaccounting = new ITDepartment('2', ['Max']); - -ITaccounting.addEmployee('Max'); -ITaccounting.addEmployee('Manu'); - -// accounting.employees[2] = 'Anna'; -ITaccounting.describe(); -ITaccounting.printEmployeeInformation(); - -const NewAccounting = new AccountingDepartment('d2', []); - -// console.log(NewAccounting.mostRecentReport); //report가 추가되지 않아서 Error -NewAccounting.setMostRecentReport = 'Year End Report'; -NewAccounting.addReport('Something went wrong...'); - -console.log(NewAccounting.mostRecentReport); //report가 있어서 문제없이 출력 -NewAccounting.printReports(); +console.log(countAndDescribe('Hi, there!')); \ No newline at end of file